Fireproff construction.



lo. 676,478. l Patented Mar. 26, |901.

F. w. GRETTsoN.

FIREPRF CUNSTRUGTION.

(Application led Aug. 27, 1900.)

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UNITED STATES PATENT OEEICE.

FRANKLIN W. GARRET'ISON, OF BALTIMORE, MARYLAND.

FIREPnooF CONSTRUCTION.

SPECIFICATION forming partof Letters Patent No. 670,478, dated March 26, 1901.

Application led August 27, 1900. Serial No. 28,098. (No model.)

To all whom it may concern:

Beit known that I, FRANKLIN W. GARRETT- SON, a citizen of the United States of America, and a resident of Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Fireproof Construction, of which the following is a specification.

My invention relates to the methods used for fireproofing buildings and other plastering purposes.

The objects of myinvention are, primarily, to provide a more effective method for supporting the fireproong plaster or material; secondly, to provide a method for preventing the plaster from cracking; thirdly., to provide against. the inroads of vermin should the plas.- ter become broken, and, fourthly, to provide a means whereby a great saving in plaster is effected. I accomplish these objects by the means hereinafter described and claimed, reference being made to the accompanying drawings, in which-- Figure l is a sectional view of my improved method for supporting the plaster and concrete. Figs. 2 and 3 show the different designs for method of cleating the Wire-netting to the sheet of metal or other fireproof material. Fig. 4 is a plan View of Fig. 3.

Similar numerals refer to similar parts throughout the several views.

1 is the concrete, placed directly on the sheet of metal 5, to which is attached the tubular device 10, having shoulder ends 2 and 9,Which serve to depend the netting 4 at a uniform distance from the said sheet metal 5, thus providing a uniform space in which to form the clenches or keys 6 ofthe plaster 7. The wires 3 and 12 are inserted through the tubular device 10 and the sheet 5, also through the netting 4, and then bent to secure same to the tubular device 10.l

11 is a bolt passing through the tubular device 10, affordinga means to suspend the sheet 5 and netting 4 from a rod or beam 8.

14 is a head on bolt l1.

18 is the opening on tubular device 10 and through which passes the cleating-wires 3 and 12 and bolt 1l. This bolt 11 may be merely a wire bent at the end 14 to form a head or bent to fasten to the netting 4.

The tubular device 10 may be either a coiled piece of Wire or a spool-shaped tube. -I do not Wish to limit myself to the specific construction shoWn, and I may usek the netting 4 and plaster 7 on both sides of the sheet of metal 5 when adapting my method to parti-v tion-Walls, dac. It Will be seen that I may limit the depth of plaster to one-half the thickness ordinarily used in other methods; also,

that the sheet of metal 5 forms a solid background, which greatly assists the netting 4to maintain its shape While the plastering 7 is being put ou, thus effecting a great saving of the plasterers time.

Having described my invention, what I claim isl. An im proved iireproof structure consisting of a sheet of metal parallel with and secured to the plaster-supporting device or screening, means for securing the said sheet metal to said plaster-supporting device and cleuches of plaster between screening and in contact with said sheet metal, substantially as described.

2. An improved ireproof structure consisting of a sheet of metal parallel with the plaster-supporting device or screening' and clenches of plaster between and in contact with the sheet of metal and plaster-supporting device, substantially as described.

3. An improved iireproof structure consisting of a sheet of metal parallel with the plaster-supporting device or screening, plastering on one side of said sheet metal, clenches of plaster between the screening and the sheet metal and in contact with the latter, and concrete on the other side of said sheet metal, substantially as described.

4. An improved fireproof structure consisting of a sheet of metal parallel with the plaster-sup porting device or screening, means for paralleling the sheet of metal with the plaster-supporting device and clenches of plaster between the screening and in contact with the said sheet metal, substantially as described.

Signedby me at Baltimore city, Maryland, this 25th day of August, 1900.

- FRANKLIN W. GARRETTSON.

Witnesses:

ALBERT ROSENBERG, WILMER EMORY. 

